Refrigerating system construction method based on refrigerant general vapor pressure equation

A technology of refrigeration system and construction method, which is applied in genetic models, genetic laws, complex mathematical operations, etc., can solve the problems of unimproved global search ability, premature convergence and slow convergence speed, and enhance the ability to jump out of local optimal solutions , improve search efficiency

Active Publication Date: 2021-11-19
TAIYUAN UNIV OF TECH
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Problems solved by technology

However, the OPTIM algorithm is prone to premature convergence and slow convergence in the process of biological evolution.
Li Huiya of the Chinese Academy of Sciences accelerated the convergence speed of the algorithm by optimizing the regression analysis, but did not improve the global search ability

Method used

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  • Refrigerating system construction method based on refrigerant general vapor pressure equation
  • Refrigerating system construction method based on refrigerant general vapor pressure equation
  • Refrigerating system construction method based on refrigerant general vapor pressure equation

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Embodiment Construction

[0037] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0038] The present invention provides a method for constructing a refrigeration system based on the universal vapor pressure equation of refrigerant, the method comprising the following steps:

[0039] Step 1: Establish a new refrigerant vapor pressure equation item library with a total of 21 items, and determine the number N of equation items to be optimized;

[0040] Step 2: Establish the optimization algorithm objective function:

[0041] The general form of the new refrigerant vapor pressure equation is:

[0042]

[0043] Among them, p cal is the calculated value of the refrigerant vapor pressure equation, T is the thermodynamic temperature, p c and T c are the critical pressure and temperature of the refrige...

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Abstract

The invention relates to a refrigerating system construction method based on a refrigerant general vapor pressure equation, relates to the form and parameter optimization calculation of a high-precision vapor pressure equation of environment-friendly alternative refrigerant in the fields of refrigerating air conditioners, heat pumps, chemical engineering and the like, and aims to solve the problem of obtaining a high-precision equation of novel refrigerant on the basis of vapor pressure experimental data. The method comprises the following steps: establishing a novel refrigerant vapor pressure equation term library and determining the number N of to-be-optimized equation terms; establishing an optimization algorithm objective function; initializing an equation set; performing equation set variation; performing regression analysis; and determining iteration ends. According to the method, capabilities of jumping out of a local optimal solution of an original biological evolution optimization algorithm is enhanced by changing a variation rule; and new control parameters are adopted, so that an optimization result of a genetic algorithm is reserved to the maximum extent, and the algorithm search efficiency is improved.f.

Description

technical field [0001] The invention relates to the technical fields of refrigeration and air conditioning, heat pumps and chemical industry, and in particular to a method for constructing a refrigeration system based on the general vapor pressure equation of refrigerant. Background technique [0002] Saturated vapor pressure is one of the important physical and chemical properties of substances. It is the basic data for system design and process parameter optimization in the fields of refrigeration and air conditioning, heat pumps, and chemical industry. It is also an important parameter for screening environmentally friendly alternative refrigerants. The vapor pressure equation plays an important role in the theoretical research and engineering application of thermodynamic properties such as fluid state equation and gas-liquid phase change law. Wagner obtained two widely used 4-parameter vapor pressure equations of Wagner2.5,5 type and Wagner3,6 type by optimizing and anal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/12G06F17/18G06N3/12
CPCG06F17/12G06F17/18G06N3/126Y02B30/70
Inventor 尹建国可晋军赵贯甲马素霞
Owner TAIYUAN UNIV OF TECH
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